Nilfisk-Advance Advance SC400 Service Manual

Also see for Advance SC400: Operating guide Operating guidelines Instructions for use

Nilfisk-Advance Advance SC400 Service Manual Manual pdf 61 page image

Solution System61Service Manual – SC400Solution SystemFunctional DescriptionThe solution system supplies the detergent to thebrush when cleaning the floor. The solution tank isalso the main machine body There is a manual valveon the left side of the tank to close the water supplywhenever maintenance must be performed on the ma-chineThe detergent quantity is adjusted by the operatorwith the push-button (SW3). The solution flows fromthe tank to the tap, through the filter and solenoidvalve (EV1) and then to the brush deckThe solenoid valve (EV1) is supplied by the functionelectronic board (EB1) when the rotary switch (SW1)is turned to 1 or 2, the brush activation push-button(SW2) is pressed and the push-button (SW3) setting isdifferent from 0 (3 LEDs off)The circuit is protected by the fuse (F3) on the func-tion electronic board (EB1)The solution valve is pulse width modulated to meterthe flow rate:Solution flow push-buttonsetting (SW3)LED display Solenoid valve ON time (EV1) Solenoid valve OFF time (EV1)0 - Always OFF1 1 sec 5 sec2 3 sec 3 sec3 Always ON -Wiring DiagramDETERGENT FLOWPUSH-BUTTON (SW3)BRUSH ENABLINGPUSH-BUTTON (SW2)ROTARY SWITCH (SW1)FUNCTION ELECTRONICBOARD (EB1)DETERGENT SOLENOIDVALVE (EV1)J1.2 - Solenoid valve power supply +J1.3 - Solenoid valve power supply –J3.1 - Control power supplyJ3.2 - Brush function returnJ3.4 - Brush rotation enablingJ3.5 - Water push-button returnB -SIGNAL CIRCUITFUSE (F3)+ 24VP200080